Adjustable hone



Dec. 10. 1946. PALQTSEE 2,412,419 1 ADJUSTABLE HONE Filed March 30, 1945 4 sheets-sheet '1 Dec. 10, 1946. J. J. PALOTSEE ADJUSTABLE HONE Filed March 50, 1945 4 Sheets-Sheet 2 ADJUSTABLE HONE 4 Sheer 5-5 5 Filed March 50, 1945 Dec.,10, 1946. ,P OTSEE I 2,412,419

ADJUSTABLE HONE Filed March so, 1945 4 Sheets-Sheet 4' Patented Dec. 10, 1946 UNITED STATES PATENT OFFICE ADJUSTABLE HON E John J. Palotsee, Youngstown, Ohio Application March 30, 1945, Serial No. 585,629

7 Claims.

1 This invention is a novel adjustable hone particularly adapted to be used in hone driving or rotating machines, preferably but not necessarily of the type shown in my U. S. Letters Patent No.

2,358,247, dated September 12, 1944, the present invention being an improvement upon the homes disclosed in my U. S. Letter Patents No. 2,269,378, dated January 6, 1942; No. 2,332,463, dated October 19, 1943; and No. 2,338,963, dated January 11, 1944.

The principal objects of the present invention are to provide an adjustable abrasive cylindrical stone hone, particularly adapted for grinding machine, finishing, polishing or boring cylindrical bearings or the like, the hone consisting of a spindle carrying an annular series of radially disposed stone holding blades each carrying a Carborundum or other abrasive hone section, the bones of the blades when the latter are fully contracted around the spindle forming a cylindrical surface having spiral grooves on its exterior or grinding surface, the blades and spindle being provided with complementary tapered surfaces, with means for shifting the spindle axially of the blades to eiiect expansion or contraction of the hone with respect to the spindle to vary the diameter thereof, and the spindle having means thereon for yieldably maintaining the blades in close contact thereon in all adjusted diameters while permitting shifting of the spindle with respect to the blades,

Another object of the invention is to provide a hone of the above type having calibrations for visibly indicating the change in diameter to which the hone is adjusted.

A further object of the invention is to provide a hone of the above type having improved novel means for removably mounting the Carborundum stones in their related blades, whereby various different types of Carborundum stones or other abrasive or honing stones may be inserted in the same set of blades to perform different kinds or grades of work.

A further object of the invention is to provide a hone of the above type in which the spindle is provided with a bore adapted to register with a bore in the shaft of the hone rotating machine, through which lubricant under pressure is fed, said bore in the spindle being provided with ducts for distributing the lubricant within the interior of the hone between the ends of the blades to lubricate the movable parts of the hone.

A still further object of the invention is to provide a multiple hone comprising a serie of individual hone sets on one spindle, with means whereby the sets may be expanded and contracted simultaneously by a single adjusting means, said multiple hone being particularly adapted for use in honing crankshaft bearings or the like with accuracy and speed.

Other minor objects of the invention will be hereinafter set forth,

I will explain the invention with reference to the accompanying drawings, which illustrate several practical embodiments thereof to enable others familiar with the art to adopt and use the same; and will summarize in the claims the novel features of construction, and novel combinations of parts, for which protection is desired.

In said drawings:

Fig. l is a side elevation of one form of hone, embodying my invention.

Fig. 2 is a longitudinal section through the hone shown in Fig. 1.

Fig. 3 is a transverse section through the hone on the line 3-3, Fig. 2.

Fig. 4 is an end elevation of the hone shown in Fig. 1, looking at the end adjacent the adjusting nut.

Fig. 5 is a plan view of the spindle of the hone shown in Fig. 2, detached.

Fig. 6 is a perspective view of a hone holding blade used with the hone shown in Fig. 1, and showing a removable hone secured therein.

Fig. 7 is a bottom plan view of the hone holding blade shown in Fig. 6.

Fig. 8 is a transverse section, similar to Fig. 3 showing a modified construction of the spindle blades and hone holders.

Fig. 9 is a bottom plan view of a modified hone holder blade used in the assembly shown in Fig, 8.

Fig. 10 is an end view of the hone holding blade shown in Figs. 8-9, showing a removable Carborundum stone and holder in place in the blade.

Fig. 11 is a section through the Carborundum stone and holder shown in Fig. 10, detached from the blade.

Fig. 12 is a bottom plan View of the stone and attached holder, shown in Fig. 11.

Fig. 13 is an end view similar to Fig, 10 but showing a further modified stone and stone holder mounted in a modified blade.

Fig. 14 is a section through the stone and stone holder shown in Fig. 13, detached from the blade.

Fig. 15 is a bottom plan View of the stone holder, shown in Fig. 14.

Fig. 16 is an end view similar to Figs. 10 and 13 showing a further modified stone and stone holding blade.

Fig, 171s an end View similar to Figs. 10,13, 16,

showing a still further modified stone and stone holding blade.

Fig. 18 is a section similar to Figs. 3 and 8 through a modified hone utilizing the type of blade and stone shown in Figs. 13, 14 and 15.

Figs. 19 and 19a, combined, show a modified hone partly in section, comprising a series of sets of hon blades in spaced relation, mounted upon a common pindle.

Fig. 20 is a transverse section on the line 20-20, Fig. 19.

As shown in Figs. 1 to '7 inclusive, the hone comprises a pilot spindle I having a hexagonal, square, or other polygonal tapered enlargement Ia adjacent its outer end, said taper sloping outwardly toward the end of the spindle. "Intermediate the ends of the spindle is anotherhexagonal or other polygonal tapered enlargement I?) having the same slope as enlargement Ia and enlarging in the same direction. The opposite end" of thelspindle isexteriorly threaded as at llc. Extending through the spindle I is a bore Id from the threaded end lc toward the opposite end, said bore being enlargedas at Ie adjacent the outer end, and the end of the bore Id adjacent the enlarged bore -Ie being threaded, as at If, for the purpose hereinafter described.

" Th corresponding faces of the tapered enlargements I'll-lb are adapted to slidably sup- -en-largements-Ialb, each blade is provided on its under side with an axially extending rib 26, Figs. 6-7, engaging corresponding slots I g in the enlargements IaI 17, thus maintaining the blades centered upon the respective faces of the said enlargements while permitting axial'movement thereon.

Slidably mounted-on the spindle I adjacent the threaded end I0, is a collar 3 having a conical face to engaging the correspondingly beveled adjacent ends 2d of the blades 2, the conical face 3a maintaining the adjacent ends of the blades 2 in assembled relation around the spindle.

Around the spindle I and contacting th inner end of the collar 3 is an antifriction bearing 4.

On the spindle I beyond bearing 4 is an adjusting nut'fiythreaded as at 5a to engage the external threads I-cof the spindle. Nut 5 is provided with arr-annular recess Ebin its end adjacent bearing 4, said recess'housing a spring 6 under compression having its ends respectively engaging the adjacent face of bearing 4 and the end of the recess 52). Preferably recess 51) is enlarged as at5c at it end adjacent the collar 3 to receive the bearing 4 whichjatter projects beyond the adjacent end of-nut' 5,'as shown in Fig. 1.

Nut 5 is further provided with a hexagonal endfie at its inner end permitting the use of asocket wrenchfor turning the nut to adjust the hone when the hone is engaged in a bore in the work, and the nut 5 cannot be readily turned by hand.

Within the enlarged portion of the bore Ie of spindle I is a sleeve 1, making a sliding fit visions.

therein, said sleeve having its inner end closed and provided with an axial perforation Ia. Within the sleeve I is a bolt 8 having a head So terminating adjacent the outer end of the sleeve, said bolt passing through the perforation Ia and being threaded into the tapered portion If of the bore Id of the spindle. Between head So of the bolt and the closed inner end of the sleeve is a coil spring .9 .under compression whereby the sleeve I isyieldably urged thereby inwardly of the bore Ie by the action of spring 9.

The outer end of sleeve 1 beyond the adjacent end of the spindle is provided with a conical yshape'dhead lb similar to but oppositely disposed with respect to the conical head 3a of collar 3, said conical portion I'b engaging the adjacent tapered ends :of the blades 2, as indicated in Fig. 2. V

By the above construction, when nut 5 is rotated on the spindle I, the collar 3 will be shifted towardor from the assembly of blades -2, and-the blades?! 1' thereby shifted radially'outwardly or inwardly on the hexagonal or polygonal enlarge ments Ia-Ib,/the conical headsSd and lb of the collar "3 and sleeve I respectively holding the blades'in assembled relation around the spindle,

5 is. somewhat stifferithan spring 9 in sleeve I so that as nut 5 is shifted toward the collar 3, the pressureiof the stronger spring-ii acting through .thecollar 3 shifts thebladesZ against the action of the weaker spring iL'thus permitting the cylindrical head lb to be shifted a corresponding amount.

Around nut 5, "adjacent collar 3, are a series of graduations 571., Fig. '1, cooperating with a zero markeb on the adjacent'end of collar 3. The calibrations are shown as divided into twelve di- Eachwdivision may equal .001 inch increase :or'decrease of the r'hone diameter when nut5 is rotated on spindle 1. Each division in turn .is divided .intoten spaces, each denoting .0001 inch increaseorzdecrease in the diameter of the hone. "By the above arrangementone completerevolution of'the nut 5 would equal .012

inch increase or decrease in 'hone diameter. Thus, when the hone i'sexpanded in the work to contact the bore thereof, the adjusting nut 5. can'then be turned to the desired increase in thousandths of an inch, utilizing the calibrations Sit and 3b upon rotationof the hone in the "bore, the" stones will then remove only that specified amount of metal from theb'ore of the Work.

The bore Id of the 'spindle receives oil from the shaft of the honing machine upon which the hone is mounted, the oil or lubricant passing 'throughthe bore Id'tothe end of the inner end tion As shown in Figs. 2,3 and 6, the Carborundum stones lli when assembled are'gr'ound to a true circle, and in the outer face of the stones spiral grooves 'I0a are cut or formed to carry away the excess cuttings and oil. 'Each' stone in said Figs. 2-6hason its inner face adov'etail longitudinal rib Illb, and the stone is cemented'orjpressed in a correspondingly shaped stone holder 1 I,',Fi'g's. 3 and 6, which conforms With theinner faceof the stone ll? audits dovetail ribs .Hlb, .as clearly indicated in Fig.3, each stone 1H} being cemented uinplace in .its stone holder H, and theholder ll reinforcing and strengthening its stone, the holder 11 forming a substantial unitary structure with'the stone itself, The stone holders 1! are slidably engaged in undercut grooves 2d, Figs.

3 and 6, in the outer faces of the blades 2, and when the stones i0 and then holders I l areslipped into the undercut grooves 2d, the stonesare locked in position therein by means of set screws 13, Figs. 3 and 6.

By this arrangement, sets of stones it of different 'qualities mounted .on their stone holders ll maybe used with the same set of blades 2, so

that the one set of blades .2 may be used with .gIOOVBSZd of the blades.

In Figs. 8, 9, 10, a modified construction of the blade and stone is illustrated in which the axial rib Zilc of each blade 23 is considerably wider than the rib 2c of blade 2 shown inFig. .7. same requiring the provision of wider slots lg in the hexagonal or polygonal enlargements la-lb of spindle l.

fEach blade 20, as shown in Fig. 10, is provided with a straight sided recess 29d .in its outer face, and with two or more bores 20c extending radially through the ribs 2&0 opposite the beveled or cam portions 2m and 201) which contact the hexagonal or polygonal tapered enlargements I0Llb of the spindle I, the bores .Zlie having enlargements 28 (Fig. at their inner ends for the purpose hereinafter described. Preferably the slots .2001 are of less Width than the outer-arcuate faces of the blades 2% and are adapted to removably receive stones 2!, shown more particularly in Figs, 8, 10, 11, 12, which stones have ribs 21a on their under faces of less width and depth than the slots 23d in the outer arcuate faces of the blades2il, stone holder plates 22 being fitted to the under faces of the stones 21 and to the exposed faces of "the ribs 2ia. on the inner faces of the stones 2| as shown in Figs. 10, '11, 12, said holders 22 having nuts 23 disposed within the. offset portionsopposite perforations 24 through which cap screws 25 are passed from the under sides of the blades through the bores 266 through the holes 2 3 in the holders 22 and engagingthe nuts 23, the stones 2| being cemented in the holders 22. The heads of the screws are housed in the enlarged bores 28 in the inner ends of the bores 20c in ribs 2B0, as clearly shown in Fig. 10.

As shown in Fig. 8, the depth of the ribs of the stones 2! and their holders 22 is less than the depth of the slots 23d in the blades 20, and preferably the outer ends of the holders '22 at each side of the offset portion are curvedon a slightly less radius than the arcuate outer faces of the blades 26 upon which same seat, so that as the cap screws 25 are tightened in the nuts 23 the sides of the holders 22 will tend to be flattened out, placing the screws 25 under tension, thus preventing loosening thereof while in service. As described in connection with the preceding figures, different sets of stones 2| mounted in their holders 22 may be mounted upon the single dorm .of stones, holders, and :blades.

6 set sofsblades 20,. to provide .a hone :f or performin :difierent characteristics of :work, :the stones .2] with their holders 22 being readily removableor attachable ato the blades 29 .;by inserting .or .reimoving'the cap .screws 2.5.. Figs. r13, :14, 15 and 1-8 show afurther modified .In this fmodification the blades 3%,Fig. 13, are provided withtbo'res Bilehaving enlargementstilf at their inner-endabutthe outer faces of the bladesare continuously arcuate and not recessed." The stones 3.! are .mounted upon stone holder plates .32 whichare arcuate but curved on a somewhat,

less 'ra'diusthan the outer faces of the blades :39, and .the holders ;32 are provided with'lnuts L133 for the receptionof cap screws fia'whichipass through 1 bores 35c and through holes in the holders 32 and into the nuts 33, which nutsare "soldered or welded to the outer sides .off'the I holdersbeforeassembly of the stone thereon, the

heads ofthecap screws 3.5 being housed inen- .largements '30 of the bores Bile. The stones 3| are cemented or otherWise adhesively secured 'to v the outer faces of the metallic holders 32. :When

the set screws 33 are tightened to attach: the stones 3| and then holders 32 to the blades 30, the holders 32 will tend to flatten out and thus 'place th'e capscrews 35 under tension, prevent- "ing same from working loose during operation.

Fig lii shows a cross-section through the hone utilizing the blades 39, the stones 3I andholders 32, and showing the holders 32 contacting the e outer edges of the blades 3!] due to the tolerance in curvature above mentioned to maintain the 35 -con-ce rned. i a I -In Fig. 16, the blade ill is similar to the blade 2i], Fig. 10. However, in this modification, the

blade has a tapered bore 43 and the-cap screws 44 are passed through bores 45 in the stone M, the heads of the cap screws seating upon the outer face of the holder-e2 so that the screws 44 are accessible from the outer surface of the blades instead of from the under sides of the blades 40. In this modification, the outer portions of the cap screws 54- which pass through bores 55 in the outer face of the stone 5l,'the head seating upon the outer face of the holder 52. In this modification, as in Fig. 13, the curvature of the holder 52 would be curved on a slightly smaller radius than the outer face of the blade 50, so that the cap screws 54 when tightened will be placed under tension.

The construction shown in Figs. 8 to 12 and 16 permits 'a-greater depth of stone to be used per blade than the construction shown in Fig. .3, and

said construction is simpler tomanufacture .and assemble. The types shown in Figs. 13 to 15 and 17 however are still moresim plified, andare particularly adaptableto small 'hones Where'the outside diameter of the hone is small; however, this type of stone mounting may also be used in larger hones.

In Figs. 1919a and 20 a further modified hone axis of the spindle.

construetion is shown, in which sets of blades are arranged on a common spindle to form a multiple hone. In this construction the spindle 60 is considerably longer than the spindles in the preceding figures, and has a threaded portion 60a at oneend; also has pairs of hexagonal. or polygonalenlargements 69a and 60b for'the respective sets of blades 6| shown as mounted in spaced series on spindle B0. The spindle is, moreover; provided with ducts 62 communicating with the spaces between the sets of blades BI and the spindle through which ducts 62 lubricant from the bore of spindle 6D is passed to lubricate the parts of the respective-sets of blades, which blades may be of the same general construction and 'may be mounted upon the enlargements Ella-60b in the same manner as described in connection with the preceding figures.

The outer ends of the outermost set of .blade .62 are beveled as at 63 to engage theconical head lb of the sleeve! which is in all respects similar to that shown in Fig. 2, sleeve 1 housing the bolt .8 passing. through the inner endof the sleeve and anchored in a nut 64, Fig. 19 which closes the outer end of the bore in the spindle,

. preventing leakage of oil'therep'ast. Sleeve-1 also 7 houses the spring 9 identically in allrespects to that shown in Fig. 2. The operation of therconical head lb is the same as that previously described; but-the inner end of the outermostzset of blades BI and the ends of the intermediate set of blades 61, and the adjacent end of the innermost setof blades 6| are not beveled but abut as at 65, Fig. 19, and the abutting ends are provided with annular recesses 66 for-the reception of yieldable springs 61 which may be in the form of stiff split springs or eleastic springs overlapping or abutting the ends of the blades to hold the abutting ends contracted around the spindle 7 60 while permitting the sets of blades 6| to contract and expand radially with respect to the The exposedend of the innermost set of blades BI is likewise beveled as at 63, Fig. 19a, and is engaged by a conical head 3a of the sleeve 3 which is actuated through the ball bearings 4 by the 'nut 5 and spring 9 in identically the same manner as described in connection with Fig. 2, the nut 5 being mounted upon the threaded end of the tap 60a of the spindle Bil, nut 5 likewise carrying the calibrations 571 as in Fig. 1.

The blades 6! carry stones ll) cemented in holders II and mounted in or on the blades '6! in manners above set forth.

In this modification adjustment of the nut 5 .on the spindle'fill will simultaneously shift the aligned sets of blades 6i on their respective enlargements 60a and 6% to adjust the stones 10 radially with respect to the axis of the spindle in the same manner as the single set is adjusted in the preceding figures, the sets moving simultaneously as a unit due'to the abutting relationship of the blade sets.

polygonal enlargements having their outer faces axially aligned and sloping in the same direction; a set of longitudinally disposed blades aroundthe spindle having oppositely beveled ends and having correspondingly sloping inner faces seated upon the enlargements; segmental hones carried by the respective blades adapted when theblades receiving the adjacent beveled ends of the blades the end of the spindle adjacent the collar being, 'exteriorly threaded;a nut] on said threaded end 7 for shifting the collar; and said bore of the spindle having ducts leading into the space between the spindle and blades.

2. In a hone as set forth in claim 1, said member comprising a sleeve slidably fitting said bore; a spring normally urging the sleeve into the bore; and a second springaround the spindle interposed between thernut and collar; said second spring being stiifer than the spring for the sleeve.

3. In a hone as set forth inclaim 1; calibrations onthe periphery of the nut cooperating ,with a Zero mark on the adjacent end of the collar. 7

4. An adjustable hone, comprising a spindle having a bore, and provided with spaced, annular pairs of polygonal enlargements having their outer faces axially aligned and sloping in the same direction; sets of longitudinally disposed blades around the spindle embracing their respective pairs of enlargements and having corre--' spondingly sloping inner faces seated upon,v the enlargements; segmental hones carried by" the '7 respective blades adapted when the blades are contracted to form cylindrical abrasive surfaces around the spindle; the outer ends of the end. sets of blades being oppositely beveled; anaxially movable collar on the spindle having a conical recess receiving the adjacent beveled ends of the blades; a member in thebore of the spindle yieldably connected with the spindle and having a conical head beyond the borereceiving the adjacent beveled ends of the blades; the end of the spindle adjacent the collar being exteriorly threaded; a nut on said threaded end of the bore for shifting the collar; theends of the sets of blades abutting; and yieldable rings around the abutting ends of the sets for maintaining said ends positioned around the spindle; the sets being shifted by said collar in unison and simultane ously expanded and contracted.

5. In a hone as set forth in claim 4, said bore of the spindle having ducts leading into the spaces between the spindle and the sets of blades.

6. In a hone as set forth in claim 4, calibrations on the periphery of the nut cooperating with a zero mark on the adjacent end of the collar.

7. In a hone as set forth in claim 4, said member comprising a sleeve slidably fitting said bore;

a spring normally urging the sleeve into the bore; 7

and a second spring around the spindle interposed between the nut and collar; said second spring being stiffer than the spring for the sleeve.

7 JOHN J. PALOTSEE; 

